Daewoo D1146 Maintenance Manual page 129

3) Operating principle
The turbocharger is a system designed to make use of the engine exhaust gas
energy to charge high-density air into the cylinders, thereby to increase the engine
output.
4.4.2. General descriptions
The engine output is determined by the fuel delivery volume and engine efficiency.
To burn the supplied fuel completely to change into effective power for the engine, the
volume of air enough to burn the fuel completely should be supplied into the cylinders.
Therefore, the engine output is determined substantially by the cylinder capacity, and
a greater volume of compressed air is charged into cylinders of given capacity, the
greater engine output can be obtained as a greater volume of air charged into the
cylinders burns so much more fuel.
As explained, the compressing of air to supply into the cylinders is called
"Supercharging" and the making use of the energy of exhaust gas discharged from the
combustion chamber to charge the compressed air into the cylinders is called
"Turbocharging".
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D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
Printed in Jan. 2001 PS-MMA0415-E1A